Home / mailings [USN-1589-1] GNU C Library vulnerabilities
Posted on 02 October 2012
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==========================================================================
Ubuntu Security Notice USN-1589-1
October 02, 2012
eglibc, glibc vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary:
Multiple security issues were fixed in the GNU C Library.
Software Description:
- eglibc: GNU C Library
- glibc: GNU C Library
Details:
It was discovered that positional arguments to the printf() family
of functions were not handled properly in the GNU C Library. An
attacker could possibly use this to cause a stack-based buffer
overflow, creating a denial of service or possibly execute arbitrary
code. (CVE-2012-3404, CVE-2012-3405, CVE-2012-3406)
It was discovered that multiple integer overflows existed in the
strtod(), strtof() and strtold() functions in the GNU C Library. An
attacker could possibly use this to trigger a stack-based buffer
overflow, creating a denial of service or possibly execute arbitrary
code. (CVE-2012-3480)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
libc6 2.15-0ubuntu10.2
Ubuntu 11.10:
libc6 2.13-20ubuntu5.2
Ubuntu 11.04:
libc6 2.13-0ubuntu13.2
Ubuntu 10.04 LTS:
libc6 2.11.1-0ubuntu7.11
Ubuntu 8.04 LTS:
libc6 2.7-10ubuntu8.2
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1589-1
CVE-2012-3404, CVE-2012-3405, CVE-2012-3406, CVE-2012-3480
Package Information:
https://launchpad.net/ubuntu/+source/eglibc/2.15-0ubuntu10.2
https://launchpad.net/ubuntu/+source/eglibc/2.13-20ubuntu5.2
https://launchpad.net/ubuntu/+source/eglibc/2.13-0ubuntu13.2
https://launchpad.net/ubuntu/+source/eglibc/2.11.1-0ubuntu7.11
https://launchpad.net/ubuntu/+source/glibc/2.7-10ubuntu8.2
